Bongaigaon district was created on 29th September, 1989 with its district headquarters at Bongaigaon, the largest city in Lower Assam.
Bongaigaon district occupies an area of 1,724 sq. kms. surrounded by Barpeta in the east, the Brahmaputra in the south and Kokrajhar in the north and west corner. It was the last capital of the Kamatapur Kingdom and home to many historical monuments of Assamese culture.